When trying to dock a jetway to the 737, I get an error that no jetway can operate at this position.  This is related to the 737 as all other aircraft work just fine at the same gates.  I'm guessing this would mean that the 737 hasn't been configured yet to be used with SODE?  I have no idea how to make a profile for aircraft.

Just as a help out the day I bought the plane I made a config only for door L1. I think this will help for your GSX woes.
Programming Door 1 with the aircraft customizer to...
-1.80, 9.00, 2.65 and 8.00 deg.

Thanks for the reply, but sadly they didn't work for me.

Here is what worked for me.

Go to Addons - GSX - Customize aircraft. Click on the CS 737, click on Pax 1 on the left side, select on Door open/close checks as FSX #1, in the position section enter -1.80, 9.00, 2.65 (thanks YVRLGBAvi8r!) in the Angle box enter 8.00 and save. Worked for me! If you already had success, then this can be for others having the same problem.  Best regards.

I tried that, but sadly didn't work for me.  However, someone had made a GSX.cfg for the 737-300 and shared it in a facebook group for it.

Xcelsior wrote on Apr 12^th, 2021 at 10:24pm:

I tried that, but sadly didn't work for me.  However, someone had made a GSX.cfg for the 737-300 and shared it in a facebook group for it.

I think I know the one you're talking about but it seems that it was on configured for the doors. I've made one that corrects the position of the GPU, doors, deice trucks, fuel truck, belt loaders & cones. You can get it here: https://tinyurl.com/KrakesTexture